Question 1

Endocrine glands have no ducts.

Accepted Answer

A) True 
 B)False

Question 2

Which three endocrine glands are affected by hormones from the anterior pituitary?

Accepted Answer

A)  thymus,adrenal cortex,gonads
B)  thymus,parathyroids,pancreas
C)  thyroid,adrenal cortex,gonads
D)  adrenal cortex,gonads,pineal gland
E)  pineal gland,pancreas,parathyroidF) D) and E)
G) All of the above

Question 3

Which gland will produce melatonin?

Accepted Answer

A)  pancreas
B)  pineal gland
C)  adrenal gland
D)  thyroid gland
E)  pituitaryF) B) and E)
G) D) and E)

Question 4

Which of the following hormones is produced by the thyroid gland and controls blood calcium levels?

Accepted Answer

A)  mineralocorticoids
B)  parathyroid hormone
C)  T4
D)  calcitonin
E)  T3F) D) and E)
G) B) and C)

Question 5

Absence of the parathyroid hormone causes

Accepted Answer

A)  lethargy and hair loss.
B)  tetany.
C)  sleepiness.
D)  mental retardation.
E)  cretinism.F) C) and E)
G) A) and E)

Question 6

Steroid hormones always have the same complex of four carbon rings.

Accepted Answer

A) True 
 B)False

Question 7

A hormone that acts on the hypothalamus to signal satiety is

Accepted Answer

A)  melatonin.
B)  thymosin.
C)  leptin.
D)  growth hormone.
E)  prostaglandin.F) C) and D)
G) None of the above

Question 8

Which of the following is NOT true of type I diabetes?

Accepted Answer

A)  It is caused when the pancreas is not producing insulin.
B)  It is likely due to an environmental agent,perhaps a virus,that causes cytotoxic T cells to destroy islets.
C)  It is treated with insulin injections and pancreatic transplants.
D)  It is dangerous due to risk of acidosis,coma,and death.
E)  It is caused by obesity.F) D) and E)
G) B) and E)

Question 9

College students are notorious for having a reversed day-night schedule.They stay up all night and sleep during the day.This alteration changes what hormone levels?

Accepted Answer

A)  melatonin
B)  leptin
C)  growth hormone
D)  testosterone in males; estrogen in females
E)  prostaglandinsF) D) and E)
G) A) and B)

Question 10

What is the role of the second messenger?

Accepted Answer

A)  to set in motion the enzyme cascade
B)  convey information between two individuals of the same species
C)  binds to the cell surface
D)  All of the answer choices are functions of the second messenger.
E)  None of the answer choices are functions of the second messenger.F) All of the above
G) A) and C)

Question 11

Which statement is correct about the location of adrenal glands in the body?

Accepted Answer

A)  The adrenal glands sit on the superior surface of the kidneys.
B)  The adrenal glands sit on the inferior surface of the kidneys.
C)  The adrenal glands sit on the superior surface of the thyroid.
D)  The adrenal glands sit on the lateral surface of the thyroid.
E)  The adrenal glands sit on the lateral surface of the kidneys.F) C) and E)
G) A) and B)

Question 12

Which statement is correct about the role of mineralocorticoids?

Accepted Answer

A)  Mineralocorticoids are used to regulate salt and water balances in the body,leading to an increase in the blood volume and blood pressure.
B)  Mineralocorticoids are used to regulate salt and water balances in the body,leading to a decrease in the blood volume and blood pressure.
C)  Mineralocorticoids are used to regulate carbohydrate,protein,and fat metabolism,leading to an increase in the blood glucose levels.
D)  Mineralocorticoids are used to regulate carbohydrate,protein,and fat metabolism,leading to a decrease in the blood glucose levels.E) A) and B)
F) A) and C)

Question 13

One side effect of taking testosterone as a steroid to increase muscle bulk is that the testes often shrink.Since the testes also produce testosterone,what is the likely mechanism for this shrinkage?

Accepted Answer

A)  The anterior pituitary assumes overproduction and drops the level of hormones that cause the testes to develop.
B)  Artificial testosterone causes a negative feedback to the anterior pituitary that in turn tries to stimulate ovary development.
C)  Testosterone has a negative feedback effect directly on testes.
D)  Artificial testosterone is toxic to testicular cells.
E)  Excess testosterone actually backfires and reverses the effects of puberty.F) B) and C)
G) A) and D)

Question 14

What hormones produced by the adrenal cortex regulate salt and water balance?

Accepted Answer

A)  adrenal steroids
B)  adrenalins
C)  glucocorticoids
D)  thymosins
E)  mineralocorticoidsF) B) and D)
G) A) and E)

Question 15

What is the role of the granulocyte-macrophage colony-stimulating factors?

Accepted Answer

A)  Granulocyte-macrophage colony-stimulating factors cause the bone marrow stem cells to form into different types of white blood cells.
B)  Granulocyte-macrophage colony-stimulating factors cause the bone marrow stem cells to form into different types of red blood cells.
C)  increase the number of fibroblasts
D)  increase the number of smooth muscle cells
E)  stimulate the healing of woundsF) A) and E)
G) A) and D)

Question 16

Which statement is NOT true about steroid hormones?

Accepted Answer

A)  It includes hormones such as estrogen.
B)  It does not bind to cell surface receptors.
C)  The hormone-receptor complex can enter the nucleus.
D)  The hormone-receptor complex can bind to chromatin.
E)  Steroid hormones act faster than peptide hormones.F) B) and C)
G) B) and E)

Question 17

The beta cells of the pancreas produce somatostatin,the alpha cells produce glucagon,and the delta cells produce insulin.

Accepted Answer

A) True 
 B)False

Question 18

Which of the following statements about T3 and T4 is not true?

Accepted Answer

A)  T4 has more potent activity than T3.
B)  They are both produced from tyrosine.
C)  They are both considered peptide hormones.
D)  T3 contains 3 iodine atoms while T4 contains 4 iodine atoms.
E)  Both increase the metabolic rate.F) A) and C)
G) A) and B)

Question 19

Which region of the human body is least likely to produce pheromones?

Accepted Answer

A)  palms
B)  scalp
C)  oral cavity
D)  axilla
E)  genital areaF) A) and B)
G) A) and E)

Question 20

Which statement is correct about the location of the parathyroid glands?

Accepted Answer

A)  The parathyroid glands are located on the posterior surface of the thyroid gland.
B)  The parathyroid glands are located on the anterior surface of the thyroid gland.
C)  The parathyroid glands are located on the posterior surface of the thymus gland.
D)  The parathyroid glands are located on the anterior surface of the thymus gland.
E)  The parathyroid glands are located on the superior surface of the thyroid gland.F) A) and D)
G) A) and E)

Exam 20: Endocrine System

Which gland will produce melatonin?

Correct AnswerverifiedShow Answer

Which statement is correct about the role of mineralocorticoids?

Correct AnswerverifiedShow Answer

What is the role of the granulocyte-macrophage colony-stimulating factors?

Correct AnswerverifiedShow Answer

Absence of the parathyroid hormone causes

Correct AnswerverifiedShow Answer

Steroid hormones always have the same complex of four carbon rings.

Correct AnswerverifiedShow Answer

One side effect of taking testosterone as a steroid to increase muscle bulk is that the testes often shrink.Since the testes also produce testosterone,what is the likely mechanism for this shrinkage?

Correct AnswerverifiedShow Answer

Which of the following hormones is produced by the thyroid gland and controls blood calcium levels?

Correct AnswerverifiedShow Answer

Which statement is correct about the location of the parathyroid glands?

Correct AnswerverifiedShow Answer

Which three endocrine glands are affected by hormones from the anterior pituitary?

Correct AnswerverifiedShow Answer

What is the role of the second messenger?

Correct AnswerverifiedShow Answer

Which region of the human body is least likely to produce pheromones?

Correct AnswerverifiedShow Answer

Which statement is correct about the location of adrenal glands in the body?

Correct AnswerverifiedShow Answer

What hormones produced by the adrenal cortex regulate salt and water balance?

Correct AnswerverifiedShow Answer

Which of the following is NOT true of type I diabetes?

Correct AnswerverifiedShow Answer

The beta cells of the pancreas produce somatostatin,the alpha cells produce glucagon,and the delta cells produce insulin.

Correct AnswerverifiedShow Answer

Which statement is NOT true about steroid hormones?

Correct AnswerverifiedShow Answer

A hormone that acts on the hypothalamus to signal satiety is

Correct AnswerverifiedShow Answer

College students are notorious for having a reversed day-night schedule.They stay up all night and sleep during the day.This alteration changes what hormone levels?

Correct AnswerverifiedShow Answer

Which of the following statements about T3 and T4 is not true?

Correct AnswerverifiedShow Answer

Endocrine glands have no ducts.

Correct AnswerverifiedShow Answer

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Which of the following statements about T₃ and T₄ is not true?

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